Reply to Akai apc40 / akai mpk mini / a&h k2 & ableton

Does anybody know how to connect a Akai APC40, Akai MPK mini and a A&H K2 together with Ableton. I have the mpk and apc working, the thing is.. i want to use the K2 for the soundcard and extra effects or midi stuff..

i have a mac..